# Circtek vs Fastsound

The clearest difference is update cadence: Circtek at every 6 days against Fastsound's every 6 months. Fastsound's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Circtek ships an update every 6 days, Fastsound every 6 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Circtek | Fastsound |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 6 months |
| Size | 12 MB | 19 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [RM online B.V.](https://appshunter.io/developer/1747904508) | [杭州发声者声学科技有限公司](https://appshunter.io/developer/1894757529) |

## What reviewers say

### Circtek

[App page](https://appshunter.io/ios/app/circtek/id6503061522)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fastsound

[App page](https://appshunter.io/ios/app/fastsound/id6762584727)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Circtek free?

Circtek is free to download, with no in-app purchases.

### Is Fastsound free?

Fastsound is free to download, with no in-app purchases.

### Do Circtek or Fastsound have ads?

Neither Circtek nor Fastsound shows ads.

### Which is updated more often, Circtek or Fastsound?

Circtek ships an update every 6 days, and Fastsound every 6 months. Most recently, Circtek was updated on October 24, 2026 and Fastsound on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*